Cita APA (7a ed.)
The Economist. (2008). Pocket World in Figures 2009. The Economist Intelligence Unit.
Cita Chicago Style (17a ed.)
The Economist. Pocket World in Figures 2009. The Economist Intelligence Unit, 2008.
Cita MLA (9a ed.)
The Economist. Pocket World in Figures 2009. The Economist Intelligence Unit, 2008.
Precaución: Estas citas no son 100% exactas.